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Bitcoin Core discloses medium-severity flaw, fix in versions 29.2 and 30.0

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Bitcoin Core publicly disclosed CVE-2025-62859 on 10 November 2026, a medium-severity flaw in versions before 29.2 and 30.0 that lets a malicious node stall block processing; fixes are included in those releases.

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The story so far: Bitcoin Core CVE-2025-62859 disclosure

Bitcoin Core disclosed CVE-2025-62859 on 10 November 2026, a medium-severity flaw in versions before 29.2 and 30.0 that lets a malicious node stall block processing. It has now also disclosed three other previously patched flaws, including a high-severity issue that could have stopped mining nodes producing block…

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  1. Bitcoin Core discloses medium-severity flaw, fix in versions 29.2 and 30.0

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